The Secret World of Alex Mack is an American television series that ran on Nickelodeon from October 8, 1994 to January 15, 1998, replacing Clarissa Explains It All on the SNICK line-up. Repeats of the series aired in 2003 on The N, but it was soon replaced there as well. The show is currently not on the air in the United States. The series was one of the first series to be produced by Brookwell McNamara Entertainment.